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How to check if an HTML5 video has ended?

How to check if an HTML5 video has ended?

TocheckifanHTML5videohasended,listenfortheendedeventonthevideoelement,whichfireswhenplaybackreachestheend;2.Optionally,checktheendedpropertyprogrammaticallytomanuallydeterminethevideo’sstateatagiventime;3.Commonusecasesincludeshowingareplaybutton,red

Aug 06, 2025 pm 03:42 PM
HTML5 video 视频结束检测
How do you specify the main content of a page in HTML5?

How do you specify the main content of a page in HTML5?

ThemaincontentofapageinHTML5isspecifiedusingtheelement,whichshouldbeusedonceperpagetowraptheprimary,uniquecontentnotrepeatedacrosspageslikeheadersorfooters;itmustnotbenestedwithin,,,or;anditenhancesaccessibilitybyservingasalandmarkforscreenreaders,ma

Aug 06, 2025 pm 03:16 PM
How to preload an HTML5 audio file?

How to preload an HTML5 audio file?

TopreloadanHTML5audiofile,usethepreloadattributewithvalues:1.auto–loadsentirefile;2.metadata–loadsonlymetadata;3.none–nopreloading;considerbandwidth,devicebehavior,andautoplayrules,anduseJavaScriptfordynamiccontrol,choosingthevaluebasedonuserneedsand

Aug 06, 2025 pm 03:00 PM
How do you use the and elements in HTML5?

How do you use the and elements in HTML5?

Use tags for inline code, which is suitable for displaying small pieces of code such as function names or variables in text; 2. Use tags to retain whitespace characters and line breaks, which is suitable for displaying multi-line code blocks; 3. Nesting it in is the best practice to display formatted code blocks, which both retain format and have semantic significance; in addition, style beautification and syntax highlighting can be performed through CSS and JavaScript libraries, and combined and improved accessibility, which is a standard semanticization method for handling code display in HTML5.

Aug 06, 2025 pm 02:32 PM
What is the url input type in HTML5?

What is the url input type in HTML5?

TheURLinputtypeinHTML5isusedforfieldsrequiringawebaddressandisdefinedwith.2.IthelpsusersentervalidURLsbyenablingbuilt-invalidationandimprovinguserexperience,especiallyonmobiledeviceswherethekeyboardadaptstoshowURL-friendlykeyslike".com"and&

Aug 06, 2025 pm 02:15 PM
How do you check if local storage is available in the browser?

How do you check if local storage is available in the browser?

Tocheckiflocalstorageisavailable,useafunctionthatattemptstosetandremoveaniteminlocalStorage,returningtrueifbothoperationssucceedandfalseifanexceptionoccurs;2.Thismethodreliablydetectsavailabilitybycatchingerrorsfromdisabledstorage,privatebrowsingmode

Aug 06, 2025 pm 01:49 PM
What is the HTML5 canvas element and how is it used for video?

What is the HTML5 canvas element and how is it used for video?

TheHTML5elementdoesnotplayvideodirectlybutworkswiththeelementtorenderandmanipulatevideoframes.2.Tousecanvaswithvideo,includeaelementforplaybackandaelementfordrawing.3.UseJavaScripttodrawvideoframesontothecanvasatregularintervalsusingrequestAnimationF

Aug 06, 2025 pm 01:00 PM
video
What is the difference between and ?

What is the difference between and ?

isthemodern,preferredmethodinHTML5fordeclaringcharacterencoding,offeringashort,efficientsyntaxthatbrowsersparseearlytopreventrenderingissues.2.istheolder,legacyapproachusedinHTML4andXHTMLtosimulateanHTTPheader,achievingthesameencodingresultbutwithmor

Aug 06, 2025 am 10:48 AM
How do you fullscreen an HTML5 video?

How do you fullscreen an HTML5 video?

To fully screen HTML5 video, you can use the browser's full-screen API; 2. Call the video.requestFullscreen() method through JavaScript to achieve full screen, which needs to be triggered when user interaction (such as clicks); 3. To be compatible with old browsers, you should check the requestFullscreen, mozRequestFullScreen, webkitRequestFullscreen, and msRequestFullscreen; 4. ExitFullscreen() to call document.exitFullscreen() and process its browser prefix version; 5. Note that full-screen requests must be triggered by user operations; 5.

Aug 06, 2025 am 10:21 AM
full screen HTML5 video
How do you disable an element in HTML5?

How do you disable an element in HTML5?

To disable HTML5 elements, use the disabled attribute, which is suitable for form elements such as, , and; 1. Add disabled attributes to disable elements without assignment; 2. Disable elements will render a gray appearance by default, and you can customize the style through: disabled pseudo-class; 3. Disabled form elements will not be submitted with the form; 4. The disabled attribute value can be dynamically set to switch states through JavaScript; 5. Non-form elements do not support disabled attributes, and they need to combine CSS's pointer-events:none and JavaScript to simulate the disable effect.

Aug 06, 2025 am 09:53 AM
html5 禁用元素
What is the canPlayType() method used for in HTML5 media elements?

What is the canPlayType() method used for in HTML5 media elements?

The canPlayType() method is used to detect whether the browser supports a specific audio and video format. Developers can select appropriate media sources for compatibility optimization based on this. The return value is "probably", "maybe" or empty string, indicating that it is likely to be supported, possible to be supported and not supported respectively. 1. When calling, string parameters containing MIME type and optional codecs must be passed in; 2. It is often used to traverse multiple formats to select the first source that may or may be supported; 3. In actual applications, client detection and server optimization must be combined, and the file cannot be guaranteed to be played, because of network or file problems, it may still cause playback failure.

Aug 06, 2025 am 08:30 AM
How do you use the pattern attribute for input validation in HTML5?

How do you use the pattern attribute for input validation in HTML5?

ThepatternattributeinHTML5isusedtospecifyaregularexpressionthattheinputvaluemustmatchtobevalid,anditworkswithinputtypesliketext,tel,email,url,andpassword;1.ItenforcescustomtextformattingdirectlyinthebrowserwithoutJavaScriptbyvalidatingtheentireinputv

Aug 06, 2025 am 07:58 AM
html5
How do you create a nested list in HTML5?

How do you create a nested list in HTML5?

To create an HTML5 nested list, one list needs to be placed into the elements of another list. 1. It can be used or used as an outer and inner list, supporting mixed types; 2. The inner list must be nested directly inside the tag and cannot be placed outside; 3. All tags must be closed correctly to keep the structure valid; 4. The browser will automatically indent the nested list, and can also customize the style through CSS.

Aug 06, 2025 am 07:05 AM
What is local storage in HTML5?

What is local storage in HTML5?

LocalstorageinHTML5allowswebappstostoredatapermanentlyinauser'sbrowserwithoutimpactingperformance.1)Itprovidespersistentstoragethatremainsuntilmanuallyremoved.2)Itofferslargecapacity(5–10MBperdomain),farexceedingcookies.3)Itoperatesclient-sideonly,re

Aug 06, 2025 am 04:39 AM

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